Flash-light.



W. S. MoGUIRE.

FLASH LIGHT.

APPLICATION rum) MAY 18, 1914.

Patented Mar. 2, 1915 4 BHBETB-BHEET 1.

WITNESSES ATTORNEYS W. S. MOGUIRE. FLASH LIGHT. urmoynou rum) MAY 18,1914.

Patented Mar. 2, 1915.

4 SHEET8-SHEET 2.

A ITORIVEL? W; S. MCGUXRE.

FLASH LIGHT.

APPLIOATXON FILED MAY 13, 1914.

1,1 30,529. Patented Mar. 2, 1915.

4 SHEETS-SHEET 3.

A HORNE ITNEESES W. S. MOGUIRE.

FLASH LIGHT.

APPLIGATION FILED MAY 18,1914.

1,1 30,529. Patented Mar. 2, 1915 4 SHEETfi-SEEBT 4.

A TTORNEYS screen partly raised; F i? r UNITED s'rans WALTER S. MQGUIRE,01E SHAD'SE'3IZLE, $1311 5.

FLASH-LIGHT.

'In'iproved Flash-Light, of which the followin is a full, clear, andexact description.

y invention relates to flash lights cur.

ployed in photography. An object thereof is to provide a simple,

.ellicient and automatic contrivance' whereby the intensity of the lightproduced by the flash can be modified by reflectors and screens.

Another object of the invention is to provide a flash light of thecharacter described which has a source of li ht for indicating the lighteffect that the %lash will produce when set 011.

A further object of the invention is to pro duce a flash light of thecharacter described wherein the product of combustion resulting from theflash is prevented from fomr ing a cloud and thus diminish the effect ofthe flash.

With the above and other objects in view the nature of which will morefully appear as the description roceeds, the invention consists in thenoveFconstruction, combinetion and arrangement of parts as herein fullydescribed, illustrated and claimed.

In the accompanying drawings forming part of the application, similarcharacters of' reference indicate corresponding parts in all the viewsand ,F igure 1 is a front elevation of a flashlight cabinet embodying myinvention, E12. 2 is a perspective view of the same showing th'eexterior diffusing 3 is a perspective view of the contrivance om therear thereof; Fig. 4 i: an enlarged fragmentary rear view of the lowerpart of the cabinet showing the dooro en and illustrating the attachmentcarried y said door; Fig. 5 is a front elevation in perspectiveof theflash light with the side reflectors removed; Fig. 6 is a verticalsection on line 6 6, Fig. 1; Fig. 7 is an enlarged. section ofthe powderpan and the holder therefor; Fig. 8 is a section view of the unionwhereby the air from the controlling bulb is led to the shutter and theflash light; and Fig. 9 is a diagrammatic view showing the airconnection and the electric connections used for the operation of myflash light.

Referring to the drawings, 10 represents the i3 Specification of Letterslzitefot. {-"atgnted in}; 2 1915.,

Application filed May 13. 19M.

a cabinet as provided w th innit suitable material, which is ;i m sfront ll,

' the cabinet -tmif. :"nhly formed of rover part being removable. if issecured to the front "cut the bottom thereof nt can i worsened par 1W iidating a chain n of the roller scr en i. 1 is mounted to siirleverticaiiy in a Home 1%, the posts 15 cf'which have Wes engaged bymembers 16 provided on i 3 parallel sides of the cabimeohnnism (notshown orovided whereby the 3. in y desired iiaiil-iet 1753 proi" .t it),cent the w nning a su'pgyrt for a with the iisme oi the iamp ried by a(int)? 20 pro- -r er pert of the cabinet therewith. The support .rirni gand interiorly of the a d ca rying a powder I ciated with the supnto thepan 21 and formpcrt is a nokzle 22 con- 23-; provided within the o 2h.-l'i secured to the support provided with a earth tlon '25 r tron:substantially the middle of t E ti the cabinet to the upper front cornerf the casing. This partition divid the cabinet into two arts A and B ofwhich part A of the c: iinet is the flush-fight chumher. and the part Bthe smoke chamher. The chamber 8 is providecl with s. fi'i(?i,=Y-lil,iYQl'l fan which is adapted to i it the product of combus tionfrom chamber l3 out to an outlet 27 of said inrt B oi the cabinet ii).The part A of the chamber is provided with mirrors adapted to reflectthe rays of the flash throu h the class front ll. of the cabinet 10. noof the mirrors 28 is carried by the partition 25., while the othermirrors 29 are secured to the parallel sides of the cabinet 10 andconverge from the front toward the rear of the cabinet; thus. the threemirrors two part :1 roller tial i or l3, controiii lamp is a support .r.vidcd in the i 10 and room- 19 projects. :3 door, the ira pan 21 rernovport. irojiectir ing part of 't. nested, support 39, outer end of. th

The cahuet form to) and side reflectors for the flash formed in the p rtA of the cabinet B.

The'ineinhers iii cf the cabinet are provided with a bracket 30positioned below the bottom of the ca inet, which bracket arries aroller screen 11. The roller screen 31 is operable by means of a chain32 passing through bl cks 3 carried by a white reflector 34, whichreflector extends from the top ofthe cabinet and which is adjustablethere on, 1'. 0.. the overhanging end of the reflector 3i may not onlybe moved to and from the front of the cabinet. ut the inclination of thesame to the front may be varied y changing the engagement of the chain35 associated with the reflector and the book 36 provided on the rear ofthe cabinet. The

bracket 320 also carries shading screens 37.

each of which extends through half of the width of the ca inet, as bestseen in Fig. 1. liach of said shade screens is adjustable on its io'llerby a chain as passing over blocks 3!) carried by the white reflector 34.The links of all of the chains for the screens are adapted to engage ahook -10 provided on the bracket where y the screens can be maintainedin any desired position and whereby difl'erent degrees of illuminationcan be obtained.

in addition to the white top reflector 34, side reflectors 41 areprovided which are of substantially triangular shape, having one sideadjacent the top reflector 1H and the op posite vertex re ting on thebracket 30. The side spaces left between the frame of cabi net 10 andthe side reflectors ll is occupied by an unstrctched reflector 42. Thereflectors 41 and iii are stretched on frames, and all the reflectorsare mounted to be easily removed from or secured to the cabinet 10.

The front otthe cabinet on the exterior side is prmided with a series oflamps 13, which. as can be seen from the drawings, are within thereflectors and the screens pro vided about the front of the cabinet, bymeans of which screens and reflectors the light coming from said lampscan be prop erly adiusted so as to. obtain the desired of feet on thesubject to be photographed. When the desired ellect is obtained.the-ilash can be set oil. and its lighting ell'ccteu the object will besubstantially the same as that of the lamps but ol dill'ercnt intensity.The flash-is prmluced by means of a bulb H with which the shutter ol thecamera 15 is operated. The tu e leading from the bulb to the shutter isbranched out by providing a Y-shaped union b3. one branch of which isconnected to the r-ozzle Si by a suitable conduit l7. The branch leadingto the nozzle has a restricted opening so as to retard the flow of airfrom the bulb to the powder pan 21. The nozzle .12 is also a restrictedpassage which will lurther retard the flow of air from the passage 23 ofthe support 19 to the powder pan: "The ason for restricting the passagesin the branch of the Y-shaped union and in the nozzle 22 is to cause theop eration of the shutter of the camera 45 previous to the displacementof the powder from the pan 21 toward the flame of the lamp l8.

Simultaneously with the setting off of the flash the fan motor 48 isbrought. into a circuit normally kept open by a cotton thread if). Thespool 50 which carries the cotton thread is mounted on a bracket 51carried by the. door 20. The thread from the s 001 passes through aguide 52, there rom through notches 53 provided in the side adjacent thefront of the powder pan, therefrom it comes in engagement with the endof a movable contact 54 of the switch and then through an eye, fromwhere the thread leads to a retaining device 55, which permits thethread to maintain the movable contact .K-l away from the stationarycontact 56. 'lheumovahle and the fixed contacts, as well as all themeans for guiding the thread, are

provided on the door .20 of the cabinet.

The movable contact at is, furthermore, so arranged that when the door'20 is opened, the. circuit leading to the motor 48-is broken, as thecontact between the movable contact 51 and the stationary contact 57provided within the cabinet 10 is interrupted, as best shown in Fig. 4,although it is in engagement with the stationary contact 56. \Vhen theflash is set it, the cotton thread 49 is ruptured, leaving the movablecontact 54 to drop or come to engagcmentwith the stationary contact 56,thus setting the motor 48 in motion; consequmtly, the action of the tan2t and the setting oil of the flash are simultaneous and thereby theformation of a cloud of smoke is prevented within the part A of thecabinet 10. It will also be noted that my cabinet can be used 88' anordinar v flash by removing the white reflectors prmided .on the sidesand the top of the cabinet and therewith the shading screens and alsothe. dill'using screen 31, leaving the difl'using screen 12 at the glassfront.

The provision of the mirrors 28 and 29 increases greatly the efi'ect ofthe flash by directing the rays through the glass front and toward thewhite reflectors. If desired my cabinet may be used without the sidereflectors by utilizing the top reflect/0' and all the screens. Theprovision of th lights 43 on the glass front of the cabinet permits thecorrect adjustment of the light ell'ccts that will be obtained by theflash, as the said lights, as previously stated, are positioned withinthe reflectors and the screens. will also berema'rked that by retardingthe flow of air from the bulb to the powder the shutteris opened beforethe flash is set oli: thus there is no danger of setting oil the flashbctorethe operation of the shutter. 7

From the foregoing description, taken in connection with theaccompanying i'ngs, the,advantage of the construction and operation ofthe device shown will be readily understood by those skilled in the artto which the invention pertains, and while I have described theprinciple of operation, together with the device which I new consider tobe the best embodiment thereof, I desire to have it understood that thedevice shown is merely illustrative and that such changes may be madewhen desired as are within the scope of the appended claims. Having thusdescribed my' invention, I claim as new and desire to secure by LettersPatent: 1 In a flash light, a cabinet having a.

glass front; a partition in said cabinet dividing tile same into twochambers, a lower one and an upper one; means for producing a flash inthe lower chamber; ventilating means associated with the up er chamber,for eliminatin the product 0 combustion produced by t e flas mirrorswithin .the 1 cabinetifor' directing the light produced by the flashthrough the lass front; and movable screens associate with the glassfront for varyin the intensity of the light produced by t e flash.

2. In a flash light, a cabinet having a glass front; a partition withinthe cabinet dividin the same into an upper and. a lower 0 amber; flashproducing means in the lower chamber; ventilating means associated withthe upper'chamber tor eliminating the products of-combustion due to thesetting ofi of the flash; means control ling the ventilating means,becoming operable when .the flash is set ofi; reflectors within thecabinet for directing the light to the glass front; movable screensassociated 40 with the glass front for varying the intensity ofthelight; and canvasreflectors associated with said screen and glassfront substantially as and for the purpose set 'forth. 5 3. In a flashlight, a cabinet having a lass front; means for setting ofl a flash inthe cabinet; mirrors for irectin the light of the flash throu h' theglass ront; a white reflector adjusts ly mounted on the top of thecabinet; a screen associated with Y the glass iron-t; a secondadjustable screen associated with the, cabinet and the white reflector;adjustable shade screens positioned betyveen the said screens; and sidereflectors for closing the space between the screens, the reflector andthe glass front.

, 4. In a flash light, a cabinet having a las front; means for thesetting ofl of a ash in the cabinet; mirrors for directing the light ofthe flash through the glass 'fro: t; a white reflector extending fromthe -top of the cabinet over the trout of the same; means for varyingthe ange the said rcflector makes ith the frontan adjust- 35 able screenmounted at the g ss front of the cabinet; a second adjustable screen infront of the first and spaced therefrom; shade screens between the saidscreens; and side white reflectors for closing the space between thefront top reflector and the screens.

In a flash light, a cabinet havi g a glass front; means for setting oila fla. h in the cabinet; mirrors within the cabinet for directing thelight to the glass front; means 7 for varyingthe efl'ect and intensityof the light coming from the cabinet; and lamps positioned on theexterior side of the glass front and inclosed within said means forvarying the light coming from the cabinet, whereby the desired lighteffect of the flash is ga ed from said lamps.

6. n a flash light, a cabinet having a glass front; means for settingofl a flash in the cabinet; ventilating means for elimig5 nating theproducts of combustion resulting from the flash; mirrors within thecabinet for directing the light from the flash to the glass front;adjustable screens and reflectors associated with the glass front forVarying the eflect and intensity of the light from the flash comingthrough the glass front; and lamps positioned on the exterior side ofthe lass front.

"5. In a ash light, a cabinet having a glass front; a partition in thecabine dividing the same into upper and lower cham-' bers; means forproducing a flash in the lower chamber; ventilating means in the upperchamber preventing the accumulation o the product of combustion in thelower chamber, said ventilating means becoming operable when the flashis set off; mirrors within the lower chamber fbr reflecting the li htfrom the flash through the front glass; we a justable screens andreflecting means associated with the cabinet for varying the efiect andthe intensity of the light coming through the front glass; and lampsositione on the exterior side of the ront 11o glass, substantially asand for the purpose set forth.

8. In aflash light, a cabinet having a glass front; a partition in saidcabinet dividing the same into an upper and a lower chamber; a door forsaid lower chamber in the rear of the cabinet; a powder supportassociated with said door; a flame generated within said lower chamber;means for forcing the powder from the support to the flame whereby theflash is set 01f; ventilating means associated with the upper cham berof the cabinet preventing the product of combustion of the flash fromaccumulat ing in the lower chamber; an electric motor for actuating saidventilating means; a circuit for the motor; a gravitationally: operableswitch in the circuit; a thread main taining said switch normally open,said thread being associated with the powder support and adapted to beruptured by the setting off of the flash, whereby said switch is closed,thus setting the ventilating means into operation; mirrors in the lowerchamber for directing the light of the flash through the glass front;and adjustable means associated with the cabinet for varying the efl'ectand the intensity of the light coming through the glass front.

9. In a hash light, a cabinet having a glass front; a partition dividingthe cabinet into an upper and a lower chamber; a door -for the lowerchamber -in the rear of the cabinet; a powder support carried by thedoor; electrically. actuated 'ventilating means associated with theupper chamber for eliminating the products of combustion from the lowerchamber; a gravitationally operable switch controlling said ventilatingmeans; a cotton thread engaging said powder support and said switchwhereby normally said ventilating means are in operative position, saidthread being adapted to be ruptured by the setting ofi" of the flash,

' whereby said switch becomes operable and therewith said ventilatingmeans; a second normally closed switch adapted to be opened when saiddoor is opened, thereby stopping the action of said ventilating means;mirrors associated with the lower chamber and adjustable reflectors andscreens associated with said cabinet for varying the effect andintensity of the light coming through the glass front of the cabinet.

10. In a flash light, a cabinet having'a. glass front; flash-producingmeans in the cabinet; mirrors in the cabinet for directing the light ofthe flash through the glass front; adjustable reflectors and screensassociated with the glass front of the cabinet for varying the intensityand the effect of the light passing through the front glass; and lampspositioned on the exterior side of the glass front and inclosed by saidreflectors and screens, whereby the probable light effect of the flashcan be gauged.

In testimony whereof I-have signed my name to this specification in thepresence two subscribing witnesses.

WALTER Si MCGUIRE.

Witnesses:

F. G. McKEnvEY, Fara) KOENENMUD.

